JPH0139520Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is applicable to seats such as automobile seats.
This invention relates to an improvement in the mounting structure of the seat skin.

[Prior Art] As shown in FIG. 6, in a conventional seat A, a seat spring B and a cushion pad C
Since the rear end E of the seat skin D, which covers the cushion material, is fixed to the seat cushion frame G via the hog ring F, the weight of the human body is not applied to the seat cushion seating surface. When this occurs, the seat skin becomes tense and supports the weight of the human body, and the deflection of the seat spring B and cushion pad C decreases, resulting in a disadvantage that the load damping effect of the seat as a whole deteriorates.

[Problems to be solved by the invention] In view of the current state of the conventional seats mentioned above, the present invention solves the problem that even if the cushion material consisting of the seat spring and the cushion pad is covered with the seat skin,
The object of the present invention is to provide a seat in which the load when sitting is sufficiently supported by a seat spring and cushion pad, and which can provide a good load attenuation effect.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a structure in which an extension piece of the rear end of the seat skin covering the cushion material consisting of the seat spring and the cushion pad is attached to the seat cushion frame. It is wound around the lower surface side of the seat cushion and fixed to the seat cushion frame via a spring material, and the spring material is elastically bent by the tension acting on the extension piece of the seat skin due to the weight of the person seated on the seat. The structure is as follows.

[Function] According to the configuration of the present invention, when the weight of the human body is applied to the seat by sitting, a tensile force is first applied to the seat skin, so that the extension piece at the rear end of the seat skin is fixed. As the spring material in the seat stretches in a direction that loosens the seat skin, the weight of the human body is immediately absorbed by the seat spring and cushion pad.
The load damping effect of the seat cushion is fully demonstrated.

When the load is removed by leaving the seat, the seat skin is pulled back to its original covering state by the restoring elasticity of the spring material, returning to its original covering form, and wrinkles, etc., do not occur or remain.

[Embodiment] FIGS. 1 and 2 show a first embodiment, in which a seat cushion 2 of a seat 1 includes a seat spring 4 attached to a seat cushion frame 3 and a cushion pad 5. The seat is covered with a seat skin 6, and parts 7, 8 of the skin 6 are connected to wires 9, 10 embedded in the cushion pad 5, which is the same structure as the conventional seat.

In the present invention, the extension piece 1 at the rear end of the seat skin 8
1 is rolled up on the lower surface 12 side of the seat cushion frame 3, and at the edge 13, it is slightly rearward from the center of the seat spring 4, which is a spring material.
It is characterized in that it is fixed via a hog ring 14.

According to this structure, when the weight of the human body is applied as shown by the chain line 15 when sitting, a tensile force is first applied to the seat skin 6.
The seat spring 4 to which the extension piece 11 at the rear end is fixed extends and is displaced in the direction of loosening the seat skin 6, and the seat skin 6 moves in the direction shown by arrow A, so that the weight of the human body is It is immediately supported by the seat spring 4 and the cushion pad 5, and the elongation and displacement of the slightly rearward portion of the seat spring 4 due to this support further promotes the movement or loosening of the seat cover 6 in the direction of arrow A. This fully demonstrates the load damping effect of the seat cushion.

3 and 4 show a second embodiment, in which an extension piece 1 at the rear end of the seat cover 17 of the seat cushion 16 has the same structure as that shown in FIG.
8 is the lower surface 20 of the seat cushion frame 19
The seat cushion frame 19 is rolled up to the side.
It has a structure in which it reaches the lower surface of the front part 21 and is attached to a spring steel wire 22 which is a spring material and is supported on the lower surface of the front part 21.

In the embodiment shown in FIG. 4, the end portions of the spring steel wire 22 are provided with hook portions 23, 24. As shown in Figure 5, the spring steel wire 2
A ring portion 28 is formed at the end of the seat cushion frame 7, and the ring portion 28 is attached to the lower side cut-out portion 31 of the front portion 30 of the seat cushion frame using a hog ring 29.
It may also be locked to.

Also in the embodiments shown in FIGS. 3 and 4,
When the weight of the human body is applied when sitting, and a tensile force is applied to the extension piece 18 of the seat skin 17, the spring steel wire 22 is elastically deformed in the direction of loosening the seat skin 17, as shown by reference numeral 22'. Since the extension piece 18 of the seat skin 17 is allowed to move or loosen in the direction shown by the arrow B, the weight of the human body is immediately supported by the seat spring 32 and the cushion pad 33, resulting in a good load damping effect. It is something that demonstrates the.

In the embodiment shown in FIGS. 3 to 5, the extension piece 18 at the rear end of the seat skin 17 is wound up from the rear end of the seat cushion 16 and reaches the front part 21 of the seat cushion frame 19. However, the winding position of the extension piece 18 may be set to the position of the rear part 34 of the seat cushion frame 19, and the rear end portion 18 may be attached to this rear part 34 by the spring steel wire 22.

In any of the embodiments described above, when the weight of the human body is removed by leaving the seat, the seat skin 6
Or 17 is the seat spring 4 which is the spring material.
Or, due to the restoring elasticity of the spring steel wire 22, it is pulled back to the original covered state, returning to the original covered state,
This can prevent the appearance of unsightly wrinkles.

[Effects] The seat according to the present invention has the structure and function described above, and when the weight of the human body is applied when sitting, the tensile force applied to the seat skin causes
On the lower surface side of the seat cushion frame, the spring material that fixes the extension piece of the skin to the seat cushion frame side extends in the direction of loosening the seat skin and removes the tension of the seat skin, so that the above load is sufficient. The seat is supported by the seat spring and cushion pad, resulting in a good load damping effect.

Further, the multi-elasticity of the spring material causes the seat skin to return to its original covering state when the load is removed, so it also has the effect of preventing the formation of unsightly wrinkles.

[Brief explanation of drawings]

1 is a schematic vertical sectional view of the first embodiment, FIG. 2 is a bottom view of the embodiment shown in FIG. 1, FIG. 3 is a schematic vertical sectional view of the embodiment shown in FIG. FIG. 5 is a bottom view of the main part of the seat shown in FIG. 3, FIG. 5 is a bottom view of the main part of the third embodiment, and FIG. 6 is a schematic vertical sectional view of an example of a conventional seat. 1: Seat, 2: Seat cushion, 3: Seat cushion frame, 4: Seat spring as spring material, 5: Cushion pad, 6, 17: Seat skin, 11, 18: Extension piece of seat skin, 1
2: Lower surface of the seat cushion frame, 22: Spring steel wire as spring material.

Claims (1)

[Scope of utility model registration request] An extension piece of the rear end of the seat skin that covers the cushion material consisting of the seat spring and the cushion pad is wrapped around the lower surface of the seat cushion frame and fixed to the seat cushion frame via the spring material. The seat is characterized in that the spring material is elastically bent by tension acting on the extension piece of the seat skin due to the weight of a person seated on the seat.